文章目录
- 前言
- 一、FTP的花样操作
- 1.配置文件
- 2.FTP的操作封装类
- 3.使用
前言
文件传输协议（File Transfer Protocol，FTP）是用于在网络上进行文件传输的一套标准协议，它工作在 OSI 模型的第七层， TCP 模型的第四层， 即应用层， 使用 TCP 传输而不是 UDP， 客户在和服务器建立连接前要经过一个“三次握手”的过程， 保证客户与服务器之间的连接是可靠的， 而且是面向连接， 为数据传输提供可靠保证。
FTP允许用户以文件操作的方式（如文件的增、删、改、查、传送等）与另一主机相互通信。然而， 用户并不真正登录到自己想要存取的计算机上面而成为完全用户， 可用FTP程序访问远程资源， 实现用户往返传输文件、目录管理以及访问电子邮件等等， 即使双方计算机可能配有不同的操作系统和文件存储方式。
一、FTP的花样操作
1.配置文件
代码语言：javascript复制public class FTPConfig
{
///
///
///
public FTPConfig()
{
IsUpload = false;
FtpServerIP = "127.0.0.1";
FtpRemotePath = "";
FtpUserID = "ftpTest";
FtpPassword = "a123456.";
}
///
/// 是否上传
///
public bool IsUpload { get; set; }
///
/// FTP的IP地址
///
public string FtpServerIP { get; set; }
///
/// 上传FTP目录
///
public string FtpRemotePath { get; set; }
///
/// 用户名
///
public string FtpUserID { get; set; }
///
/// 密码
///
public string FtpPassword { get; set; }
}2.FTP的操作封装类
代码语言：javascript复制public class FTPHelp
{
private string ftpURI;
private FTPConfig ftpConfig { get; set; }
///
/// 连接FTP
///
///
public FTPHelp(FTPConfig ftpConfig)
{
this.ftpConfig = ftpConfig;
if (string.IsNullOrEmpty(this.ftpConfig.FtpRemotePath))
{
ftpURI = "ftp://" this.ftpConfig.FtpServerIP "/";
}
else
{
ftpURI = "ftp://" this.ftpConfig.FtpServerIP "/" this.ftpConfig.FtpRemotePath "/";
}
}
///
/// 上传
///
///
public void Upload(string filename)
{
if (ftpConfig.IsUpload)
{
FileInfo fileInfo = new FileInfo(filename);
string uri = ftpURI fileInfo.Name;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.UploadFile;
reqFTP.UseBinary = true;
reqFTP.ContentLength = fileInfo.Length;
int buffLength = 2048;
byte[] buff = new byte[buffLength];
int contentLen;
using (FileStream fs = fileInfo.OpenRead())
{
using (Stream strm = reqFTP.GetRequestStream())
{
try
{
contentLen = fs.Read(buff, 0, buffLength);
while (contentLen != 0)
{
strm.Write(buff, 0, contentLen);
contentLen = fs.Read(buff, 0, buffLength);
}
strm.Close();
fs.Close();
}
catch (Exception ex)
{
string errorMessage = "Upload Error --> " ex.Message;
//logger.Error(errorMessage);
throw;
}
}
}
}
else
{
//logger.Debug("[UploadData] uploadConfig.IsUpload is false,abort to loaddata");
}
}
///
/// 下载
///
///
///
public void Download(string filePath, string fileName)
{
FtpWebRequest reqFTP;
try
{
FileStream outputStream = new FileStream(filePath "\" fileName, FileMode.Create);
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI fileName));
reqFTP.Method = WebRequestMethods.Ftp.DownloadFile;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
long cl = response.ContentLength;
int bufferSize = 2048;
int readCount;
byte[] buffer = new byte[bufferSize];
readCount = ftpStream.Read(buffer, 0, bufferSize);
while (readCount > 0)
{
outputStream.Write(buffer, 0, readCount);
readCount = ftpStream.Read(buffer, 0, bufferSize);
}
ftpStream.Close();
outputStream.Close();
response.Close();
}
catch (Exception ex)
{
string errorMessage = "Download Error --> " ex.Message;
//logger.Error(errorMessage);
throw;
}
}
///
/// 删除文件
///
///
public void Delete(string fileName)
{
try
{
string uri = ftpURI fileName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.DeleteFile;
string result = String.Empty;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
}
catch (Exception ex)
{
string errorMessage = "Delete Error --> " ex.Message " 文件名:" fileName;
//logger.Error(errorMessage);
throw;
}
}
///
/// 删除文件夹
///
///
public void RemoveDirectory(string folderName)
{
try
{
string uri = ftpURI folderName;
FtpWebRequest reqFTP;
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(uri));
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
reqFTP.KeepAlive = false;
reqFTP.Method = WebRequestMethods.Ftp.RemoveDirectory;
string result = String.Empty;
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
long size = response.ContentLength;
Stream datastream = response.GetResponseStream();
StreamReader sr = new StreamReader(datastream);
result = sr.ReadToEnd();
sr.Close();
datastream.Close();
response.Close();
}
catch (Exception ex)
{
string errorMessage = "Delete Error --> " ex.Message " 文件名:" folderName;
//logger.Error(errorMessage);
throw;
}
}
///
/// 获取当前目录下明细(包含文件和文件夹)
///
///
public string[] GetFilesDetailList()
{
string[] downloadFiles;
try
{
StringBuilder result = new StringBuilder();
FtpWebRequest ftp;
ftp = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
ftp.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
ftp.Method = WebRequestMethods.Ftp.ListDirectoryDetails;
WebResponse response = ftp.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default);
string line = reader.ReadLine();
while (line != null)
{
result.Append(line);
result.Append("n");
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf("n"), 1);
reader.Close();
response.Close();
return result.ToString().Split('n');
}
catch (Exception ex)
{
downloadFiles = null;
//logger.Error(ex);
return downloadFiles;
}
}
///
/// 获取当前目录下文件列表(仅文件)
///
///
public string[] GetFileList(string mask)
{
string[] downloadFiles;
StringBuilder result = new StringBuilder();
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
reqFTP.Method = WebRequestMethods.Ftp.ListDirectory;
WebResponse response = reqFTP.GetResponse();
StreamReader reader = new StreamReader(response.GetResponseStream(), Encoding.Default);
string line = reader.ReadLine();
while (line != null)
{
if (mask.Trim() != string.Empty && mask.Trim() != "*.*")
{
string mask_ = mask.Substring(0, mask.IndexOf("*"));
if (line.Substring(0, mask_.Length) == mask_)
{
result.Append(line);
result.Append("n");
}
}
else
{
result.Append(line);
result.Append("n");
}
line = reader.ReadLine();
}
result.Remove(result.ToString().LastIndexOf('n'), 1);
reader.Close();
response.Close();
return result.ToString().Split('n');
}
catch (Exception ex)
{
downloadFiles = null;
if (ex.Message.Trim() != "远程服务器返回错误: (550) 文件不可用(例如，未找到文件，无法访问文件)。")
{
string errorMessage = "GetFileList Error --> " ex.Message.ToString();
//logger.Error(errorMessage);
}
return downloadFiles;
}
}
///
/// 获取当前目录下所有的文件夹列表(仅文件夹)
///
///
public string[] GetDirectoryList()
{
string[] drectory = GetFilesDetailList();
string m = string.Empty;
foreach (string str in drectory)
{
int dirPos = str.IndexOf("");
if (dirPos > 0)
{
/*判断 Windows 风格*/
m = str.Substring(dirPos 5).Trim() "n";
}
else if (str.Trim().Substring(0, 1).ToUpper() == "D")
{
/*判断 Unix 风格*/
string dir = str.Substring(49).Trim();
if (dir != "." && dir != "..")
{
m = dir "n";
}
}
}
char[] n = new char[] { 'n' };
return m.Split(n);
}
///
/// 判断当前目录下指定的子目录是否存在
///
/// 指定的目录名
public bool DirectoryExist(string RemoteDirectoryName)
{
string[] dirList = GetDirectoryList();
foreach (string str in dirList)
{
if (str.Trim() == RemoteDirectoryName.Trim())
{
return true;
}
}
return false;
}
///
/// 判断当前目录下指定的文件是否存在
///
/// 远程文件名
public bool FileExist(string RemoteFileName)
{
string[] fileList = GetFileList("*.*");
foreach (string str in fileList)
{
if (str.Trim() == RemoteFileName.Trim())
{
return true;
}
}
return false;
}
///
/// 创建文件夹
///
///
public void MakeDir()
{
if (!string.IsNullOrEmpty(ftpConfig.FtpRemotePath))
{
FtpWebRequest reqFTP;
try
{
// dirName = name of the directory to create.
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI));
reqFTP.Method = WebRequestMethods.Ftp.MakeDirectory;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
string errorMesasge = "MakeDir Error --> " ex.Message;
//logger.Error(errorMesasge);
throw;
}
}
}
///
/// 获取指定文件大小
///
///
///
public long GetFileSize(string filename)
{
FtpWebRequest reqFTP;
long fileSize = 0;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI filename));
reqFTP.Method = WebRequestMethods.Ftp.GetFileSize;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
fileSize = response.ContentLength;
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
string errorMesasge = "GetFileSize Error --> " ex.Message;
//logger.Error(errorMesasge);
throw;
}
return fileSize;
}
///
/// 改名
///
///
///
public void ReName(string currentFilename, string newFilename)
{
FtpWebRequest reqFTP;
try
{
reqFTP = (FtpWebRequest)FtpWebRequest.Create(new Uri(ftpURI currentFilename));
reqFTP.Method = WebRequestMethods.Ftp.Rename;
reqFTP.RenameTo = newFilename;
reqFTP.UseBinary = true;
reqFTP.Credentials = new NetworkCredential(ftpConfig.FtpUserID, ftpConfig.FtpPassword);
FtpWebResponse response = (FtpWebResponse)reqFTP.GetResponse();
Stream ftpStream = response.GetResponseStream();
ftpStream.Close();
response.Close();
}
catch (Exception ex)
{
string errorMesasge = "ReName Error --> " ex.Message;
//logger.Error(errorMesasge);
throw;
}
}
///
/// 移动文件
///
///
///
public void MovieFile(string currentFilename, string newDirectory)
{
ReName(currentFilename, newDirectory);
}
///
/// 切换当前目录
///
///
/// true 绝对路径 false 相对路径
public void GotoDirectory(string DirectoryName, bool IsRoot)
{
if (IsRoot)
{
ftpConfig.FtpRemotePath = DirectoryName;
}
else
{
ftpConfig.FtpRemotePath = DirectoryName "/";
}
ftpURI = "ftp://" ftpConfig.FtpServerIP "/" ftpConfig.FtpRemotePath "/";
}
///
/// 删除订单目录
///
///
///
public static void DeleteOrderDirectory(FTPConfig ftpConfig, string folderToDelete)
{
try
{
if (!string.IsNullOrEmpty(ftpConfig.FtpServerIP) &&
!string.IsNullOrEmpty(folderToDelete) &&
!string.IsNullOrEmpty(ftpConfig.FtpUserID) &&
!string.IsNullOrEmpty(ftpConfig.FtpPassword))
{
FTPTestViewModel fw = new FTPTestViewModel(ftpConfig);
//进入订单目录
fw.GotoDirectory(folderToDelete, true);
//获取规格目录
string[] folders = fw.GetDirectoryList();
foreach (string folder in folders)
{
if (!string.IsNullOrEmpty(folder) || folder != "")
{
//进入订单目录
string subFolder = folderToDelete "/" folder;
fw.GotoDirectory(subFolder, true);
//获取文件列表
string[] files = fw.GetFileList("*.*");
if (files != null)
{
//删除文件
foreach (string file in files)
{
fw.Delete(file);
}
}
//删除冲印规格文件夹
fw.GotoDirectory(folderToDelete, true);
fw.RemoveDirectory(folder);
}
}
//删除订单文件夹
string parentFolder = folderToDelete.Remove(folderToDelete.LastIndexOf('/'));
string orderFolder = folderToDelete.Substring(folderToDelete.LastIndexOf('/') 1);
fw.GotoDirectory(parentFolder, true);
fw.RemoveDirectory(orderFolder);
}
else
{
throw new Exception("FTP 及路径不能为空！");
}
}
catch (Exception ex)
{
throw new Exception("删除订单时发生错误，错误信息为：" ex.Message);
}
}
}3.使用
代码语言：javascript复制public void Upload()
{
ftpConfig.IsUpload = true;
Upload(@"D:temp.png");
MessageBox.Show("上传完成!!!");
}
public void Download()
{
Download(@"D:", "temp.png");
MessageBox.Show("下载完成!!!");
}
public void Delete()
{
Delete("temp.png");
MessageBox.Show("删除完成!!!");
}
